Only upload items that are less than 2mb in size.  Pictures should be in their original format, meaning, no colour alterations or cropping.  Preferably, pictures should not be in the shape of an image, like a heart.  Remember - pictures that are of lower quality and lower resolution will be of a lower quality in the final product.

Email us if you have other quesitons that we didn't answer.  In most situations we can make what you have work.